1.) Take all PSSG gz files and using WinRAR, extract each to a separate directory (otherwise, feel pain of thousands of files in one directory).
2.) Place totori.exe file in the root directory that contains all model folders (btlField, cg, chara, ..., worldmap).
3.) Run totori.exe.
4.) It will take 10 minutes to a half hour to process all model files and extract textures.
5.) LightWave export works good, OBJ works, but it generates lots of files. You have to figure out how to merge them in your choice of modeler.
6.) Textures have to be manually applied; program also exports morph maps and I can't tell them apart from regular stuff so you have to manually remove them yourself.
7.) It's a lot of work, but if you want something bad enough, you need to work for it.
8.) There is also a problem with level maps. The program loads all the models in the map, but they are positioned wrong. I can't fix this until a later time.
EDIT:
Program updated to support Meruru as well.
Though, yeah, hard work pays off. =D